Abstract:
:The Autographa californica M nucleopolyhedrovirus (AcMNPV) viral fibroblast growth factor (vFGF) has functional parallels to cellular FGFs. Deletion of the AcMNPV vfgf has no obvious phenotype in cell culture but delays the time of insect death. Here, we determined vFGF production during virus infection. vFGF was detected at 24 hours post infection and through the remainder of the infection cycle. Since vFGF is thought to be a secreted membrane-binding protein and virions acquire an envelope derived from the cell membrane, we examined virions for the presence of vFGF using microscopy, flow cytometry, and affinity chromatography. We found that vFGF associated with virions. Furthermore, budded virus carrying vFGF had more affinity to heparin than vFGF-deficient budded virus, consistent with the affinity of FGFs for heparan sulfate proteoglycans. Although the function of virion-associated vFGF is not clear, we found that virion-associated vFGF stimulated cell motility and affected virus attachment.
journal_name
Virologyjournal_title
Virologyauthors
Lehiy CJ,Martinez O,Passarelli ALdoi
10.1016/j.virol.2009.09.011subject
Has Abstractpub_date
2009-12-05 00:00:00pages
152-60issue
1eissn
0042-6822issn
1096-0341pii
S0042-6822(09)00559-5journal_volume
395pub_type
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